Move querysort into its own file
Remove superfluous braces
Use VCL_xxx types and add missing matching prototypes

While here unify check.
Add real2time, time2integer and time2real to the std vmod

As discussed on the latest VDD.
Prepare for the 4.0.1 release.
Expose WS_MarkOverflow()
White space nit
A couple more corner cases
Explicitly round down for timestamps
I know it's the OCD talking here, but neither a fixed 32 param limit
or an string-insertion-sort feels right for me.

Using reserved workspace to tracking the params and qsort(3) to sort them
solves both problems.
Remove comment which breaks markup